Direct SIP with IP-PBX in OCS 2007

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Hello folks,

Applying all hotfixes released in August 2008 we will be able to configure OCS 2007 in Direct SIP with IP-PBX (actually there is a comparative matrix in the same post where MS tested some Cisco Call Manager versions).

More information about this you can check this blog from Office Communicaton Server Team out:

After a few days of the initial post the OCSTeam blogged explaining how to do such configuration, as follows:


Anderson Patricio

Written by Anderson Patricio

Anderson Patricio

Anderson Patricio is a Canadian MVP in Cloud and Datacenter Management, and Office Server and Services, besides the Microsoft Award he also holds a Solutions Master (MCSM) in Exchange and several other certifications. Anderson has been contributing to the Microsoft Community with articles, tutorials, blog posts, twitter, forums and book reviews. He is a regular contributor here at,, and Anderson (Portuguese).